What Happens to My Alarm Monitoring If My Phone Line Is Cut?

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Sometimes during burglaries or home invasions, an intruder will cut the phone line or internet cable to prevent the alarm system from communicating with the monitoring center. The lines can also be cut accidentally during construction work. The best way to get around this problem is to use a security system with cellular backup.

Cellular backup

In many cases, modern home security systems come equipped with cellular backup. This is a system that routes the signal wirelessly using the same technology as cellphones—no landline required.

Cellular monitoring is a game-changer. It eliminates one of the greatest vulnerabilities of traditional home security systems: the fact that the physical line between the alarm and the monitoring station is vulnerable to breaks. Having the cellular backup option means that if the primary connection goes out, you still have a lifeline.

Compare home security brands' cellular options


Compare the best home security systems

Brand
Self-monitoring option
Monthly cost Icon Tooltip  Dark
Starter equipment price
Break-in deterrent(s) Icon Tooltip  Dark
Smart home compatibility Icon Tooltip  Dark
Learn more
Icon Yes  LightYes
$249.96Active Guard, AI detection, Live agent intervention, SirenAmazon,
Google
Icon No  LightNo
$599.00Smart Deter lurker detection, Lights, Sounds Amazon,
Google,
Z-Wave
Icon No  LightNo
$0.00Smart AI detection, 2-way talk, Yard sign/window decalGoogle,
Z-Wave
Icon No  LightNo
Quote required
Online quiz
Motion sensors/cameras, Glass break sensor, SirenAmazon, Google
Icon Yes  LightYes
$149.99Acoustic/vibration sensors, AI-powered alerts, Smart security integrationAmazon, Google, Apple, Z-Wave, Zigbee

Info current as of post date. Offers and availability may vary by location and are subject to change. Read full disclaimer. *ADT $28.99 for landline system only. Full ADT disclaimer

Cathy Habas
Written by
With over eight years of experience as a content writer, Cathy has a knack for untangling complex information. Her natural curiosity and ability to empathize help Cathy offer insightful, friendly advice. She believes in empowering readers who may not feel confident about a purchase, project, or topic. Cathy earned her Bachelor of Arts degree in English from Indiana University Southeast and began her professional writing career immediately after graduation. She is a certified Safe Sleep Ambassador and has contributed to sites like Safety.com, Reviews.com, Hunker, and Thumbtack. Cathy’s pride and joy is her Appaloosa “Chacos.” She also likes to crochet while watching stand-up comedy specials on Netflix.

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